S
M
T
W
T
F
S
30
78°
59°
31
78°
61°
1
79°
62°
2
79°
54°
3
78°
52°
4
75°
53°
5
75°
53°
6
77°
54°
7
80°
54°
8
81°
60°
9
82°
59°
10
82°
52°
11
76°
58°
12
77°
56°
13
78°
50°
14
75°
50°
15
74°
48°
16
73°
49°
17
75°
56°
18
77°
48°
19
75°
53°
20
75°
51°
21
79°
53°
22
75°
56°
23
80°
56°
24
74°
55°
25
76°
55°
26
79°
54°
27
79°
54°
28
78°
53°
29
79°
53°
30
79°
52°
1
78°
52°
2
78°
45°
3
77°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Atlanta
Atlanta's September 2026 forecast shows daily high temperatures ranging from 73° to 82°, with overnight lows between 42° and 62°. The average high for September is 77° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Atlanta. See also: October | November | December.
